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Mark1960 · 3rd Oct 2022, 7:59 pm

Its also possible to get a tip for the soldering iron thats designed to heat every pin of a 14 or 16 pin dil ic. Not sure they go a far as 20 pin for the 74ls244. On an old pcb like the PET there is still a risk of damage to top side pads or traces if the solder is not properly molten on the top side when the IC is pulled. I would possibly try with a temperature controlled heat gun from the top side of the board, but this has a similar risk, which is why we haven’t recommended this for Brackenfix.

3rd Oct 2022, 7:59 pm	#162
Mark1960 Octode Join Date: Mar 2020 Location: Kitchener, Ontario, Canada Posts: 1,297	Re: 1978 Commodore PET project Its also possible to get a tip for the soldering iron thats designed to heat every pin of a 14 or 16 pin dil ic. Not sure they go a far as 20 pin for the 74ls244. On an old pcb like the PET there is still a risk of damage to top side pads or traces if the solder is not properly molten on the top side when the IC is pulled. I would possibly try with a temperature controlled heat gun from the top side of the board, but this has a similar risk, which is why we haven’t recommended this for Brackenfix.